Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2006-06-06
2006-06-06
Nguyen, Duc (Department: 2643)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S522000, C455S069000, C370S333000
Reexamination Certificate
active
07058400
ABSTRACT:
A method and apparatus for dynamically controlling forward and reverse link channel processing gain to minimize dropped connections and improve the reliability of hard handoffs is disclosed. The transmission bit stream of a forward or reverse link channel is allowed to become dynamic under controlled conditions in such a way as to take advantage of the inherit strengths that the concept of processing gain provides and thereby improve the probability of establishing and maintaining a forward or reverse link traffic channel. Dropped connections due to reverse link fades and dropped connections during call origination are minimized by allowing a MS to transmit reverse traffic channel data using dynamically adjustable data rates to increase the processing gain and the effective transmit power level. In addition, dropped connections during hard handoffs are minimized by using a special code channel and dynamically adjustable data rates to evaluate the proposed new link.
REFERENCES:
patent: 5841806 (1998-11-01), Gilhousen et al.
patent: 6169763 (2001-01-01), Woodward et al.
patent: 2003/0078010 (2003-04-01), Davis
Denso Corporation
Nguyen Duc
LandOfFree
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